如何构建和运行 aws-iot-device-sdk-embedded-C 示例？

Question

这是aws-iot-device-sdk-embedded-C示例。 但是当我调用make命令时，出现如下错误：

~/environment/aws-iot-device-sdk-embedded-C/samples/linux/subscribe_publish_sample ((6c99912...)) $ make
make -C ../../../external_libs/mbedTLS
make[1]: Entering directory `/home/ec2-user/environment/aws-iot-device-sdk-embedded-C/external_libs/mbedTLS'
make[1]: *** No targets specified and no makefile found.  Stop.
make[1]: Leaving directory `/home/ec2-user/environment/aws-iot-device-sdk-embedded-C/external_libs/mbedTLS'
make: *** [all] Error 2

如何构建和运行这个示例？ （我不是 C 开发者，所以请尽可能提供详细的答案）

Answer 1

原因是缺少mbedTLS库。

请拨打 go 至：

/home/ec2-user/environment/aws-iot-device-sdk-embedded-C/external_libs/mbedTLS

看看它的自述文件：

# Copy source code for mbedTLS into this directory
#
# You'll need to download mbedTLS from the official ARMmbed repository and
# place the files here. We recommend that you pick the latest version of 2.16
# LTS release in order to have up-to-date security fixes.